Drinking water quality · 2023
· Verified
What's in Slo Csa No. 16 - Shandon — San Luis Obispo, Ca, CA tap water
12 contaminants were measured in the Slo Csa No. 16 - Shandon — San Luis Obispo, Ca, CA water system's 2023 annual report. Each is shown below against its federal limit.
- Reporting year
- 2023
- Contaminants measured
- 12
- Over federal limit
- 0
- Approaching the limit
- 0
- Service area
- CA
PFAS ("forever chemicals")
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| PFOSPerfluorooctanesulfonic acid, a PFAS 'forever chemical' once used in firefighting foam and coatings. | 2.7 ng/LReported levelWell 05 | 4 ng/LMCL | Within the limit |
+By source (2)— Well 05, Well 04
| |||
Inorganic chemicals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| NitrateA compound from fertilizer runoff, septic systems, and erosion of natural deposits. | 3.8 mg/LAverageWells | 10 mg/LMCL | Within the limit |
Other
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Chlorine Free | 1.49 mg/LAverageWells | None set | Within the limit |
+By source (3)— Distribution (Treated) - Range Detected, Wells, Distribution (Treated)
| |||
Radionuclides
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| Gross AlphaGross alpha particle activity — a combined measure of alpha-emitting radioactive substances. | 5.3 pCi/LAverageWells | 15 pCi/LMCL | Within the limit |
| Combined RadiumCombined radium-226 and radium-228 — naturally occurring radioactive elements. | 0.036 pCi/LAverageWells | 5 pCi/LMCL | Within the limit |
| UraniumA naturally occurring radioactive metal from erosion of natural deposits. | 2.22 pCi/LAverageWells | 20 pCi/LMCL | Detected — no federal limit |
Metals
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| LeadA toxic metal that leaches into water from old service lines, solder, and plumbing fixtures. | 4.3 ug/L90th percentileAt the tap | None set | Within the limit |
| ArsenicA naturally occurring element that also enters water from industry and agriculture. | 2.1 ug/LAverageWells | None set | Within the limit |
| CopperA metal that enters water from corroding household plumbing. | 0.098 mg/L90th percentileAt the tap | 1.3 mg/LAction level | Within the limit |
| BariumA metal from erosion of natural deposits and industrial discharge. | 0.12 mg/LAverageWells | 2 mg/LMCL | Within the limit |
| Chromium, HexavalentHexavalent chromium ('chromium-6') — the more toxic form of chromium. | 0.74 ug/LAverageWells | None set | Detected — no federal limit |
Disinfection byproducts
| Contaminant | Measured | Federal limit | Status |
|---|---|---|---|
| TTHMTotal trihalomethanes — a group of four chemicals (including chloroform) formed when chlorine reacts with natural organic matter. | 3.4 ug/LAverageDistribution (Treated) | None set | Within the limit |
+By source (2)— Distribution (Treated) - Range Detected, Distribution (Treated)
| |||
People also ask about Slo Csa No. 16 - Shandon — San Luis Obispo, Ca, CA's water
+Is Slo Csa No. 16 - Shandon — San Luis Obispo, Ca, CA tap water safe to drink in 2023?
Every one of the 12 contaminants measured in Slo Csa No. 16 - Shandon — San Luis Obispo, Ca, CA's 2023 Consumer Confidence Report is below its federal limit. "Safe" under the EPA's drinking-water standards is health-based, not aesthetic — but by those standards, no measured contaminant in this report exceeds its enforceable threshold. Individual health concerns (e.g. immunocompromised, infant, pregnancy) may warrant additional filtering regardless of compliance.
+What contaminants are in Slo Csa No. 16 - Shandon — San Luis Obispo, Ca, CA tap water?
12 contaminants were measured in Slo Csa No. 16 - Shandon — San Luis Obispo, Ca, CA's 2023 Consumer Confidence Report, spanning metals, radionuclides, and disinfection byproducts. 7 have an enforceable federal limit; the rest are detected but unregulated. Every measured value, in the utility's own units, is on this page.
+Where does the data on this page come from?
Every value is transcribed from Slo Csa No. 16 - Shandon — San Luis Obispo, Ca, CA's 2023 Consumer Confidence Report — the annual drinking-water report every U.S. public water utility is required by federal law to publish. The original source document is archived and viewable on this site. A water-quality report covers an entire service area, not a single address.
+How often is Slo Csa No. 16 - Shandon — San Luis Obispo, Ca, CA's water quality data updated?
Each U.S. public water utility publishes one Consumer Confidence Report per year, covering the prior calendar year's measurements. This page reflects the 2023 report; a new report will replace it once the utility publishes its next annual update.